There's also a lot of crap goes around about tariffs on trade, if it gets shipped as a "work in progress" like say unpacked razor blades, there's no import duty to be paid (or because it's unfinished it has a low value and therefore low duties to be paid) - stick a wrapper on it and it's finished, price then goes up... neatly legally avoided the duty (or most of it) and the country of manufacture can be changed too - since the last part of manufacture has happened in the destination country rather than the originating one.